Subtract 18/21 from 36/3
1st number: 12 0/3, 2nd number: 18/21
36/3 - 18/21 is 78/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
36/3 = 36 × 7/3 × 7 = 252/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
18/21 = 18 × 1/21 × 1 = 18/21 - Subtract the two like fractions:
252/21 - 18/21 = 252 - 18/21 = 234/21 - After reducing the fraction, the answer is 78/7
- In mixed form: 111/7
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